J&J booster shot slashes Omicron hospitalisations - South African study

A booster dose of Johnson & Johnson Inc's single-dose Covid-19 vaccine was 84 percent effective at preventing hospitalisation in South African healthcare workers who became infected as the Omicron variant spread, researchers said on Thursday.

The real-world study, which has not been peer-reviewed, was based on a second dose of the J&J vaccine administered to 69,092 workers between Nov 15 and Dec. 20...